package br.com.portal.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
//import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

//@WebFilter("/app/*")
public class LoginFilter implements Filter {
	
	@Override
	public void init(FilterConfig config) throws ServletException {
	    // If you have any <init-param> in web.xml, then you could get them
	    // here by config.getInitParameter("name") and assign it as field.
	}
	
	@Override
	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
	    HttpServletRequest request = (HttpServletRequest) req;
	    HttpServletResponse response = (HttpServletResponse) res;
	    HttpSession session = request.getSession(false);
	
	    if (session == null || session.getAttribute("rep") == null) {
	        response.sendRedirect(request.getContextPath() + "/login.jsp");
	    } else {
	        chain.doFilter(req, res);
	    }
	}
	
	@Override
	public void destroy() {
	    // If you have assigned any expensive resources as field of
	    // this Filter class, then you could clean/close them here.
	}
}